How To Use amygdaloidal In A Sentence
- These minerals occur in amygdaloidal cavities and in nodules in intermediate composition volcanic rocks of the Conejos Formation.
- The Fountain of Saint Vulcan, anti-blepharous and amygdaloidal, was charged with such potent minerals that a single spoonful produced a diarrhoea more distressing to witness than cholera. South Wind
- The native-copper deposits can be further divided into fissure veins, and blanket-type lode deposits that occur in amygdaloidal lava flow tops and sedimentary conglomerate beds.
- The summit of Machacha is composed of a dark igneous rock, apparently a sort of amygdaloidal trap, with white and greenish calcareous crystals scattered through it. Impressions of South Africa
- Mineralogically, the conglomerate lodes have produced many superb specimens, although they contain fewer mineral species than the fissure veins and amygdaloidal lodes.
- Orebodies in the fissure veins and both rock types were formed by hot water solutions moving upward and laterally along fractures and fault zones, brecciated amygdaloidal flow tops, and permeable conglomerate beds.
- I ascended one, and found it was capped with trap rock in amygdaloidal nodules. Journal of an Expedition into the Interior of Tropical Australia
- They are generally trap-rock, embracing the varieties of gray, porphyritic, hornblendic, sienitic, and amygdaloidal trap, and appear to have had no labor expended upon them except the chiseling of a groove around the middle for the purpose of attaching a withe to serve as a handle. Ancient Mining on the Shores of Lake Superior
- These crystals occur in amygdaloidal cavities, either as massive fillings or as linings of trapezohedral crystals that rarely exceed 1 cm across.
- The ore bodies have the form of long sheets parallel to the bedding, the copper and associated minerals filling amygdaloidal openings and small fissures in the flows, and replacing conglomeratic sediments which lie between the flows. The Economic Aspect of Geology
